Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for MCM Electronics LC-4.5
Summary of Contents for MCM Electronics LC-4.5
- Page 1 MAN100 Model LC-4.5 PART #5203 Reference Manual...
-
Page 2: Typical Applications
TYPICAL APPLICATIONS Interference Testing Cathodic Protection Tests Rectifier Trouble-Shooting URD Cable Corrosion Tests Bridge Deck Corrosion Surveys (Rebar) Surface Potential Surveys Side Drain Measurements... - Page 3 GENERAL The model LC-4.5 is a state-of-the-art digital meter specifically designed for corrosion and cathodic protection testing. The M.C. Miller Co. has taken the following steps to insure that your meter will cope with the difficult environmental conditions encountered by corrosion engineers and technicians: ...
- Page 4 20 ft or less, it is often referred to as a detailed survey. If the spacing is 5 ft or less it is called a continuous potential survey. Because it is small and light, the LC-4.5 works well for this type of survey.
- Page 5 These should be synchronized within a fraction of a second. IR DROP MEASUREMENTS Because the 20mV DC range of the LC-4.5 has a resolution of .01mv, it is ideally suited for measuring IR drops on metallic structures such as pipes, cables, guide wires, or structural members.
- Page 6 DC CURRENT MEASUREMENTS USING EXTERNAL SHUNT An external shunt (not supplied) is required. MCM’s .001 ohm LC shunt (5803) used in conjunction with the 20mV range yields a range of 0-20A DC. This compact shunt has convenient banana plug potential terminals which plug into the common (-) and (+) 20mV terminals.
- Page 7 From this data, you will be able to obtain approximate maximum, minimum, and average values. Another technique is to use a high sensitivity analog voltmeter connected in parallel with your LC-4.5. The Analog meter indicates trends, and therefore suggests when to push the hold button to obtain the readings you desire.
-
Page 8: Battery Power Supply
BRIDGE DECK CORROSION SURVEYS In areas where de-icing salts are used on highways in the winter, accelerated corrosion of the steel reinforcement (rebar) often occurs. A potential survey (on 4 ft centers) of the rebar will provide useful data as to the presence or absence of active corrosion on rebar. - Page 9 LC-4.5 TROUBLE-SHOOTING No display reading? Battery dead or disconnected Replace battery Display partially or complete blackened? Meter subjected to excessive temperature Replace display No reading on AC range? Function switch in wrong position Turn function switch to AC position ...
-
Page 10: Maintenance
MAINTENANCE The Model LC-4.5 should require very little maintenance other than to replace the 9V battery when “Lo Bat” indication appears in the display. Several hours of normal operation remain after “LO Bat” flashes on. If operator remembers to turn off the meter at night, service life of a 9V battery should be about 3 months. - Page 11 DC Rejection: 600VAC range: 600VDC Zero: Automatic Decimal Point: Automatic – set by range switch Polarity: Automatic – negative symbol displayed, positive assumed Overload Protection: Will safely withstand overloads on all voltage ranges well in excess of any normally encountered Warm-Up: Negligible Over-range:...
Need help?
Do you have a question about the LC-4.5 and is the answer not in the manual?
Questions and answers